const { initWeixin } = require('../../lib/third-party/index');
const { ERROR } = require('../../common/error');
const { preUnifiedLogin, postUnifiedLogin } = require('../../lib/utils/unified-login');
const {
    generateWeixinCache,
    getWeixinPlatform,
    saveWeixinUserKey,
    saveSecureNetworkCache,
} = require('../../lib/utils/weixin');
const { LOG_TYPE } = require('../../common/constants');
const url = require('url');

/**
 * 微信登录
 * @tutorial https://uniapp.dcloud.net.cn/uniCloud/uni-id-pages.html#login-by-weixin
 * @param {Object} params
 * @param {String} params.code          微信登录返回的code
 * @param {String} params.inviteCode    邀请码
 * @returns
 */
module.exports = async function (params = {}) {
    const schema = {
        code: 'string',
        inviteCode: {
            type: 'string',
            required: false,
        },
    };
    this.middleware.validate(params, schema);
    const {
        code,
        inviteCode,
        // 内部参数，暂不暴露
        secureNetworkCache = false,
    } = params;
    const { appId } = this.getUniversalClientInfo();
    const weixinApi = initWeixin.call(this);
    const weixinPlatform = getWeixinPlatform.call(this);
    let apiName;
    switch (weixinPlatform) {
        case 'mp':
            apiName = 'code2Session';
            break;
        case 'app':
        case 'h5':
        case 'web':
            apiName = 'getOauthAccessToken';
            break;
        default:
            throw new Error('Unsupported weixin platform');
    }
    let getWeixinAccountResult;
    try {
        getWeixinAccountResult = await weixinApi[apiName](code);
    } catch (error) {
        console.error(error);
        await this.middleware.uniIdLog({
            success: false,
            type: LOG_TYPE.LOGIN,
        });
        throw {
            errCode: ERROR.GET_THIRD_PARTY_ACCOUNT_FAILED,
        };
    }

    const {
        openid,
        unionid,
        // 保存下面四个字段
        sessionKey, // 微信小程序用户sessionKey
        accessToken, // App端微信用户accessToken
        refreshToken, // App端微信用户refreshToken
        expired: accessTokenExpired, // App端微信用户accessToken过期时间
    } = getWeixinAccountResult;

    if (secureNetworkCache) {
        if (weixinPlatform !== 'mp') {
            throw new Error('Unsupported weixin platform, expect mp-weixin');
        }
        await saveSecureNetworkCache({
            code,
            openid,
            unionid,
            sessionKey,
        });
    }

    const { type, user } = await preUnifiedLogin.call(this, {
        user: {
            wx_openid: {
                [weixinPlatform]: openid,
            },
            wx_unionid: unionid,
        },
    });
    const extraData = {
        wx_openid: {
            [`${weixinPlatform}_${appId}`]: openid,
        },
    };
    if (type === 'register' && weixinPlatform !== 'mp') {
        const { nickname, avatar } = await weixinApi.getUserInfo({
            accessToken,
            openid,
        });

        if (avatar) {
            const avatarPath = url.parse(avatar).pathname;
            const extName = avatarPath.indexOf('.') > -1 ? url.parse(avatar).pathname.split('.').pop() : 'jpg';
            const cloudPath = `user/avatar/${openid.slice(-8) + Date.now()}-avatar.${extName}`;
            const getAvatarRes = await uniCloud.httpclient.request(avatar);
            if (getAvatarRes.status >= 400) {
                throw {
                    errCode: ERROR.GET_THIRD_PARTY_USER_INFO_FAILED,
                };
            }

            const { fileID } = await uniCloud.uploadFile({
                cloudPath,
                fileContent: getAvatarRes.data,
            });

            extraData.avatar_file = {
                name: cloudPath,
                extname: extName,
                url: fileID,
            };
        }

        extraData.nickname = nickname;
    }
    await saveWeixinUserKey.call(this, {
        openid,
        sessionKey,
        accessToken,
        refreshToken,
        accessTokenExpired,
    });
    return postUnifiedLogin.call(this, {
        user,
        extraData: {
            ...extraData,
            ...generateWeixinCache.call(this, {
                openid,
                sessionKey, // 微信小程序用户sessionKey
                accessToken, // App端微信用户accessToken
                refreshToken, // App端微信用户refreshToken
                accessTokenExpired, // App端微信用户accessToken过期时间
            }),
        },
        isThirdParty: true,
        type,
        inviteCode,
    });
};
